Deploy collab like nightly (#7174)

After this change we'll be able to push a tag to github to deploy to
collab.

The advantages of this are that there's no longer a separate step to
first
build the image, and then deploy it.

In the future I'd like to make this happen more automatically (maybe as
part of
bump nightly).

Release Notes:

- N/A

script/lib/deploy-helpers.sh

@@ -8,33 +8,30 @@ function export_vars_for_environment {
   export $(cat $env_file)
 }
 
-function image_id_for_version {
-  local version=$1
-
-  # Check that version is valid
-  if [[ ! ${version} =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-    echo "Invalid version number '${version}'" >&2
-    exit 1
-  fi
-
-  # Check that image exists for version
-  tag_names=$(doctl registry repository list-tags collab --no-header --format Tag)
-  if ! $(echo "${tag_names}" | grep -Fqx v${version}); then
-    echo "No docker image tagged for version '${version}'" >&2
-    echo "Found images with these tags:" ${tag_names} >&2
-    exit 1
-  fi
-  
-  echo "registry.digitalocean.com/zed/collab:v${version}"
-}
-
-function version_for_image_id {
-  local image_id=$1
-  echo $image_id | cut -d: -f2
-}
-
 function target_zed_kube_cluster {
   if [[ $(kubectl config current-context 2> /dev/null) != do-nyc1-zed-1 ]]; then
     doctl kubernetes cluster kubeconfig save zed-1
   fi
 }
+
+function tag_for_environment {
+  if [[ "$1" == "production" ]]; then
+    echo "collab-production"
+  elif [[ "$1" == "staging" ]]; then
+    echo "collab-staging"
+  else
+    echo "Invalid environment name '${environment}'" >&2
+    exit 1
+  fi
+}
+
+function url_for_environment {
+  if [[ "$1" == "production" ]]; then
+    echo "https://collab.zed.dev"
+  elif [[ "$1" == "staging" ]]; then
+    echo "https://collab-staging.zed.dev"
+  else
+    echo "Invalid environment name '${environment}'" >&2
+    exit 1
+  fi
+}